This is a 2 color model but it can be printed on a single color printer. For two color prints use the BOOpinORANGE and BOOpinBLACK files. With a single filament change make sure you print several at a time to share with friends and family. 

For a single color printer in your slicer program the filament change at 3mm. 

There is a slot on the back for a 1" or 25mm pin back. Glue this on with either epoxy or CA (Superglue) When using CA use either Thick or Flexible. Because this is thicker, allow plenty of time to dry.

I prefer to print this model using matte Black and matte Orange PLA filaments but it would work very well with regular PLA filament or transparent PETG filaments.